The main symptom of hemangioma is flat red mark that can be located anywhere on the body, most often on the face, scalp, chest or back.
A hemangioma may be present at birth, but in many cases, appears within the first several months of life.
Children usually have only one mark, but this may vary as some children may have more than one. During the a child's first year, the red mark grows rapidly and becomes a spongy mass that protrudes from the skin.
The hemangioma proceeds to a rest phase and, eventually begins to slowly disappear. Half of all hemangiomas resolve by the age of 5 and nearly all by age 10.
The color of the birthmark fades but faint discoloration of the skin or residual extra skin may remain.
The exact cause of hemangioma is not known.
A hemangioma is made up of an abnormally dense group of extra blood vessels.
There is not any clarity to what causes these blood vessels to group together, although genetics is believed to play a part in it.
4 Making a Diagnosis
A hemangioma is diagnosed based on appearance. No diagnostic tests are necessary.
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